Pipe Repair
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. The use of Shearography technique to evaluate polymeric composite repairs - case study
ABSTRACT Pipelines are subject to a variety of defects such as wall thickness loss, grooves, dents and holes. To restore the pipe integrity, polymeric composite repairs can be used. The inspection of repaired pipes is of fundamental importance, not only to verify the initial integrity, but also to monitor their state over time. Shearography is a laser optica
Matéria (Rio J.). Publicado em: 09/10/2017
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2. Estudo do comportamento mecânico de dutos de aço com reparos compósitos hibridos / Mechanical behavior of steel pipes repaired with a hybrid laminate
Worldwide, steel pipes play an important role in many industrial sectors. Meanwhile, any kind of duct is prone to suffer superficial damages due to corrosion. In this sense, techniques which allow fast and reliable repairs of ducts have a fundamental importance to increase the life cycle, avoid accidents, minimize environmental contaminations and to keep the
Publicado em: 2010
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3. Energía calorífica necesaria, durante la soldadura en servicio de tuberías para el transporte de petróleo
The thermal behavior during in service repair welding of oil transportation pipes was studied by finite element analysis in the present paper. Regression equations that relate peak temperature at the inner surface of the pipe and cooling time between 800 and 500ºC in the heat affected zone to the welding heat input, preheat temperature, and convection heat
Soldagem & Inspeção. Publicado em: 2009-03
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4. Service quality of building maintenance by outsourced companies: a case study in a public organization / Qualidade no serviço de manutenção predial terceirizado: um estudo de caso em uma organização pública autárquica
This scientific work investigated the subject of service quality. It refers to the question of evaluating the quality of outsourcing technical services (from specialized firms that place their employees at the sites of the client) under the approach of multiple agents it involves relationships of several employees of each organization in a business, as state
Publicado em: 2009
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5. Leak detection and calibration of transient hydraulic system models / Calibração e detecção de vazamentos em modelos de sistemas hidráulicos no escoamento transitório
The occurrence of large leakage losses in water supply systems has been frequently linked with pipe breaks resulting from high pressures levels in pipes. Efficient location of leakages is required in order to effectively control water losses and quickly repair the system. Analysis of hydraulic transients has been particularly useful for calibration and leak
Publicado em: 2007
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6. Effect of in service weld repair on the performance of CrMo steel steam pipelines
This article presents a literature overview and discusses a practical case involving the effect of in service weld repair on the performance - behavior under creep conditions and remanent life - of low alloy CrMo steel steam pipelines with longstanding use. According to the specialized literature, several authors argue that the in service weld repair of low
Materials Research. Publicado em: 2006-06
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7. NUMERICAL MODELING OF REINFORCEMENT OF PIPELINES WITH USE OF COMPOSITE MATERIALS / MODELAGEM NUMÉRICA DE REFORÇO DE DUTOS COM EMPREGO DE MATERIAIS COMPÓSITOS
O presente trabalho trata do desenvolvimento de uma modelagem numérica para estruturas cilíndricas com materiais compósitos. Uma classe especial de materiais compósitos, os materiais com gradação funcional (FGM), também é investigada. O modelo constitutivo adotado para o material compósito é baseado na regra das misturas. Esta metodologia é aplica
Publicado em: 2006